diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index ff1a6a903463..14bee49f0bf9 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -3414,16 +3414,19 @@ static int kfd_mmio_mmap(struct kfd_node *dev, struct kfd_process *process,
 }
 
 
-static int kfd_mmap(struct file *filp, struct vm_area_struct *vma)
+static int kfd_mmap(struct file *filep, struct vm_area_struct *vma)
 {
 	struct kfd_process *process;
 	struct kfd_node *dev = NULL;
 	unsigned long mmap_offset;
 	unsigned int gpu_id;
 
-	process = kfd_get_process(current);
-	if (IS_ERR(process))
-		return PTR_ERR(process);
+	process = filep->private_data;
+	if (!process)
+		return -ESRCH;
+
+	if (process->lead_thread != current->group_leader)
+		return -EBADF;
 
 	mmap_offset = vma->vm_pgoff << PAGE_SHIFT;
 	gpu_id = KFD_MMAP_GET_GPU_ID(mmap_offset);